Balance board



FIG. 1 shows a top front perspective view of a balance board in accordance with the present design.

FIG. 2 shows a bottom rear perspective view of the balance board of FIG. 1.

FIG. 3 shows a front elevation view of the balance board of FIG. 1.

FIG. 4 shows a rear elevation view of the balance board of FIG. 1.

FIG. 5 shows a left side elevation view of the balance board of FIG. 1.

FIG. 6 shows a right side elevation view of the balance board of FIG. 1.

FIG. 7 shows a top plan view of the balance board of FIG. 1; and,

FIG. 8 shows a bottom plan view of the balance board of FIG. 1.

The broken lines illustrate portions of the balance board that form no part of the claimed design. 

CLAIM I claim the ornamental design for a balance board, as shown and described. 